cheat-engine-star-ocean-ram-dump.lua

-- [!] assumes following version of pcsx2-dev is used:
--   https://github.com/PCSX2/pcsx2/tree/c16db05e0c3a5806fad1fd571141284facc7b421

-- [!] assumes breakpoint exists at:
--   pcsx2-dev.dmaSIF1+603

outputfile = assert(io.open("X:/output.file", "wb"))
outputsize = 0
outputwant = 0x35A000 -- from header @ 0x14

function DumpMemToFile(file, addr, size)
  local data_table = readBytes(addr, size, true)
  local data_string = byteTableToString(data_table)
  file:write(data_string)
  return string.len(data_string)
end

MEMCPY_ADDR = getAddress("VCRUNTIME140.memcpy")

function debugger_onBreakpoint()
  if EIP == MEMCPY_ADDR then
    local dest = readInteger(ESP+0x4)
    -- 24xxxxxx is the base for IOP RAM in PCSX2 process
    -- 0x10BD00-0x1A7D00 (size 0x9C000) contains "PK3" data
    if (dest >= 0x2410BD00) and (dest < 0x241A7D00) then
      local src = readInteger(ESP+0x8)
      local count = readInteger(ESP+0xC)
      outputsize = outputsize + DumpMemToFile(outputfile, src, count)
      if (outputsize >= outputwant) then
        if (outputfile ~= nil) then
          outputfile.close()
          outputfile = nil
          return 0 -- stop
        end
      end
    end
  end
  return 1 -- continue
end